QRandomGenerator: don't internally rely on QT_HAS_INCLUDE

GCC didn't support it until version 5 or 6, so add configure tests for
both <random> and <sys/auxv.h>. Normally I'd say "upgrade", but this is
too low-level and important a feature.

There's a good chance that all our supported compilers have <random>
anyway. As for <sys/auxv.h>, it's present on Glibc, Bionic and MUSL, but
I don't see it in uClibc (AT_RANDOM is a Linux-specific feature).

Change-Id: Ia3e896da908f42939148fffd14c5b2af491f7a77
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

4 files changed, 71 insertions, 0 deletions

diff --git a/config.tests/unix/cxx11_random/cxx11_random.cpp b/config.tests/unix/cxx11_random/cxx11_random.cpp
new file mode 100644
index 0000000000..d6872667fd
--- /dev/null
+++ b/config.tests/unix/cxx11_random/cxx11_random.cpp
@@ -0,0 +1,35 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 Intel Corporation.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <random>
+
+int main()
+{
+    std::mt19937 mt(0);
+    return 0;
+}
diff --git a/config.tests/unix/cxx11_random/cxx11_random.pro b/config.tests/unix/cxx11_random/cxx11_random.pro
new file mode 100644
index 0000000000..0cd5fff9d9
--- /dev/null
+++ b/config.tests/unix/cxx11_random/cxx11_random.pro
@@ -0,0 +1 @@
+SOURCES = cxx11_random.cpp
diff --git a/config.tests/unix/sys_auxv/sys_auxv.cpp b/config.tests/unix/sys_auxv/sys_auxv.cpp
new file mode 100644
index 0000000000..62f71e95d2
--- /dev/null
+++ b/config.tests/unix/sys_auxv/sys_auxv.cpp
@@ -0,0 +1,34 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 Intel Corporation.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <sys/auxv.h>
+
+int main()
+{
+    return getauxval(AT_NULL);
+}
diff --git a/config.tests/unix/sys_auxv/sys_auxv.pro b/config.tests/unix/sys_auxv/sys_auxv.pro
new file mode 100644
index 0000000000..6920d80e39
--- /dev/null
+++ b/config.tests/unix/sys_auxv/sys_auxv.pro
@@ -0,0 +1 @@
+SOURCES = sys_auxv.cpp